Island Green Power

What Island Green Power does

Island Green Power (IGP) is a UK-based renewable energy developer founded in 2013 that specialises in utility-scale solar photovoltaic (PV) projects and co-located battery energy storage systems (BESS), with project sizes ranging from below 5MW to nationally significant infrastructure projects exceeding 600MW. The company operates a four-stage development methodology spanning site appraisal and legal review, permits and consents, design and engineering, and construction and commissioning, executed through direct engagement with landowners for land leases and partnerships with EPC contractors for build-out. Technology components include single-axis tracking systems for solar yield maximisation and integrated BESS for energy storage and grid stabilisation, with construction timelines of 12-16 weeks for sites up to 50MW and 12-18 months for larger projects.

The business has historically monetised assets by developing projects to planning consent and selling them to infrastructure investors and solar operators, having placed over 3GW of capacity globally across nearly 40 projects (21 in the UK, the remainder in Australia, Spain, Italy, Ireland, and New Zealand) with buyers including BayWa, Overland Sun Farming, and Ark Energy. Following Macquarie Asset Management's progression from a 50% stake in 2022 to 100% ownership in 2025, IGP is transitioning to an Independent Power Producer (IPP) model, constructing and operating assets itself to generate recurring revenue from electricity generation, BESS dispatch, and PPA income. The founders retain ownership of the international business outside the UK. Customer segments comprise landowners providing sites via long-term leases, energy investors and IPPs acquiring developed assets, and ultimately electricity consumers served via utility offtakers and corporate PPAs; the company also engages local communities around project sites for co-benefits.

Go-to-market is sales-led and relationship-driven: direct landowner outreach via land and referencing agents, industry event participation (e.g., the Renewable Procurement and Revenue Summit), membership of Solar Energy UK, and project-specific digital presence. The head office is in London (Coda Studios, Munster Road) with a regional office in Norwich and an office in Madrid; operations span six countries. Leadership has been substantially refreshed in 2024-2026, including a new CEO (Bob Psaradellis, ex-GE/Renewable Power Capital), CFO (Stephen Bowler, ex-IGas Energy), CCO (Tomas Tuominen, ex-Macquarie Green Investment Group), CLO, CHRO, and Head of Procurement, reflecting the operational build-out required for the IPP pivot.

Name

Island Green Power

Legal name

Island Green Power Limited

Website

https://islandgp.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

11–50 employees

Short description

Island Green Power is a London-headquartered utility-scale solar PV and battery storage developer, now transitioning to an Independent Power Producer under 100% Macquarie Asset Management ownership, serving landowners, energy investors, and electricity markets across the UK, Spain, Italy, Australia, Ireland, and New Zealand.

Ownership category

akta.pro rank

Product category

Renewable Energy Development

NAICS

Solar Electric Power Generation (221114), Power and Communication Line and Related Structures Construction (237130)

SIC

Electric Services (4911)

akta.pro primary industry

Permitting, Environmental & Stakeholder Engagement (EIA/ESIA, Community Relations) (EUAMAAAB)

akta.pro secondary industry

Utility-Scale BESS Project Development & Ownership (IPP/Developer) (EUAFAAAA)

Keywords

• Utility-scale solar development
• Battery energy storage systems
• Renewable energy development
• Solar farm development
• Independent power production

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales, Technology or R&D

Revenue model

1. Project Development and Sale: The company develops utility-scale solar and battery storage projects from site identification through planning consent, then sells completed projects to investors. Founded in 2013, the company has developed over 3GW of solar projects globally and maintains a pipeline of more than 15GW of projects.
2. Independent Power Producer (IPP) Operations: From 2025, following full acquisition by Macquarie Asset Management, the company is transitioning from a pure development business to an IPP model—building and operating assets rather than solely developing and selling them. This creates recurring revenue streams from electricity generation and storage services.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Island Green Power is a utility-scale solar PV and battery energy storage system (BESS) developer. The company identifies suitable sites, secures planning consent, designs and engineers projects, and either sells completed assets to infrastructure investors or — following its 2025 transition — constructs and operates them as an Independent Power Producer (IPP). Its portfolio includes projects ranging from below 5MW to Nationally Significant Infrastructure Projects exceeding 600MW, with co-located battery storage of up to 600MW capacity.

Product overview

Island Green Power is a utility-scale solar PV and battery energy storage system (BESS) developer that operates as a development-to-operations renewable energy company. The company's core offering consists of developing, constructing, and operating solar power projects and co-located battery storage facilities across the UK, with additional projects in Australia, Spain, Italy, and Ireland. Their project portfolio spans from small-scale 5MW installations to nationally significant infrastructure projects exceeding 500MW, with the company transitioning from a pure developer model to becoming an independent power producer (IPP) following Macquarie Asset Management's full acquisition in 2025.

Differentiator

Problem solved

Functional benefit

Products and services

• Utility-Scale Solar PV Projects Large-scale photovoltaic solar power generation projects ranging from 5MW to over 600MW capacity. IGP identifies sites, secures planning consent, designs and engineers projects, and constructs them for sale to infrastructure investors or retention as operating IPP assets. Includes Nationally Significant Infrastructure Projects such as Cottam (600MW) and West Burton (480MW).
• Battery Energy Storage Systems (BESS) Utility-scale battery storage installations co-located with solar generation assets that store excess energy and release it during peak demand or negative pricing periods. Provides grid stability, energy trading capabilities, and dispatchable generation. Projects include up to 600MW of co-located battery storage at Cottam.

Quantifiable outcome

• 400,000 tonnes of carbon saved per year (Cottam project)
• +3 more outcomes

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Six partnerships are on record, tiered core and minor.

• BayWa Renewable EnergycoreStrategic or Co-development PartnerJoint development partner for Australian solar projects including Yatpool (106MW), Hughenden (22MW), and potentially others. BayWa is a major global renewable energy company.
• Overland Sun FarmingcoreStrategic or Co-development PartnerJoint development partner for Australian solar projects including Yatpool, Wemen (109MW), Middlemount (34MW), Hay (152MW), and others. Overland Sun Farming is an Australian renewable energy developer.
• Ark EnergyminorStrategic or Co-development PartnerDevelopment partner for Nevertire (130MW) solar project in Australia. Ark Energy is a renewable energy developer.
• Wirsol EnergyminorStrategic or Co-development PartnerJoint development partner for Wemen (109MW) solar project in Australia alongside Overland Sun Farming.
• Hadstone EnergyminorStrategic or Co-development PartnerDevelopment partner for Carrowdore (7MW) solar project in Northern Ireland.
• EPC ContractorscoreImplementation/ SI/ Consulting PartnerIsland Green Power works with leading Engineering Procurement and Construction (EPC) contractors who have extensive experience in constructing solar farms. Construction timelines: sites up to 50MW take 12-16 weeks; larger projects 12-18 months.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Lightsource bp: One of the largest utility-scale solar developers and IPPs globally, headquartered in the UK. Closely comparable to IGP across all dimensions: utility-scale solar PV and BESS development, similar project sizes (sub-5MW to 600MW+), land lease model with landowners, and transition from developer to long-term IPP asset owner.
• BayWa Renewable Energy: Global utility-scale solar developer and IPP, joint development partner with IGP in Australia (Yatpool 106MW, Hughenden 22MW). Directly comparable business model focused on developing, financing, and operating solar projects across Europe, Americas, and Asia-Pacific.
• NextEnergy Capital: UK-based solar development and fund management business with utility-scale solar operations across Europe. Operates similar developer-to-IPP model with multiple GW of operational capacity and pipeline, and was acquired by KKR in 2022, paralleling IGP's Macquarie ownership trajectory.
• RES (Renewable Energy Systems): Global renewable energy developer and EPC contractor with significant UK solar project development operations. Comparable in developing utility-scale solar projects from origination through construction, with similar land lease and planning consent approach to IGP.
• Cubico Sustainable Investments: Global renewable energy developer and IPP with UK solar operations. IGP's COO Chris Jacobs previously held engineering leadership at Cubico, indicating direct talent overlap. Operates similar developer-to-IPP model with utility-scale solar and storage assets.

Emerging players

• Cero Generation: Solar developer that emerged from Macquarie's Green Investment Group, focused on European utility-scale solar PV and BESS. Closely comparable to IGP in project type and European focus, though still primarily in development phase rather than at IGP's scale of consented projects and operational assets.

Broad incumbents

• EDF Renewables UK: UK arm of EDF's global renewable energy business, developing and operating utility-scale solar, onshore wind, and battery storage projects. Comparable in UK utility-scale solar and BESS activity, but operates within EDF's broader diversified portfolio including offshore wind and nuclear.
• RWE Renewables: Major European utility with large-scale renewable energy development including UK solar operations. Comparable in UK utility-scale renewable project development, though RWE's broader portfolio spans offshore wind, onshore wind, hydrogen, and conventional generation.
• Iberdrola Renovables: Global renewable energy developer and IPP through ScottishPower Renewables in the UK. Comparable in utility-scale solar and BESS development globally, though Iberdrola operates a much broader portfolio across multiple renewable technologies and geographies.
• Enel Green Power: One of the world's largest renewable energy operators with extensive utility-scale solar and storage development. Operates comparable developer-to-IPP model at much larger global scale, providing competitive benchmark for IGP's UK-focused strategy.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries2 records

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Island Green Power